Abstract
AIM: To explore the effect of taurine on the pylorus ligation-induced gastric ulcer in rats and its mechanism.
METHODS: Rat model of gastric ulcer was made by pylorus ligation method. A total of 45 Wistar rats were randomly and averagely divided into 3 groups: normal control group, ulcer model group and taurine-treated group. Six hours later, all the rats were killed, and the gastric mucosal ulcer index (UI), total acidity of gastric juice, pepsin activity and H+,K+-ATPase activity in parietal cells were measured.
RESULTS: In comparison with the normal control group, the ulcer model group showed an increase in UI (35.3 ± 3.7 vs 0, P < 0.01), total acidity of gastric juice (28.56 ± 3.81 mmol/L vs 20.34 ± 4.40 mmol/L, P < 0.01), pepsin activity [7.58 ±1.58 μg/(mL·min) vs 5.83 ± 1.22 μg/(mL·min), P < 0.01] and H+, K+-ATPase activity of parietal cells (8.86 ± 1.50 U/mg vs 6.95 ± 1.03 U/mg, P < 0.01). However, in the treated group, the gastric mucosal injury was attenuated, and the value of gastric mucosal UI (15.4 ± 3.6 vs 35.3 ± 3.7, P < 0.01), total acidity of gastric juice (19.58 ± 3.68 mmol/L vs 28.56 ± 3.81 mmol/L, P < 0.01), pepsin activity [6.36 ± 1.45 μg/(mL·min) vs 7.58 ± 1.58 μg/(mL·min), P < 0.05] and H+, K+-ATPase activity of parietal cells (7.62 ± 1.46 U/mg vs 8.86 ± 1.50 U/mg, P < 0.05) were decreased significantly as compared with those in the model group.
CONCLUSION: Taurine can alleviate gastric ulcerative injury in pylorus-ligated rats, which may be related to the inhibitory effect of taurine on the secretion of gastric acid and pepsin.
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